As of April 2021, the Google-sponsored noto font kit covers 95% of all non-CJK glyphs, and 32% of all CJK glyphs, for a combined coverage of 54% of the glyphs defined in the Unicode 13 standard.

Meta Tag’s tool gets around that by creating pseudos-fonts made up of special characters in Unicode, what your phone and computer use to handle text and emojis in the first place.

So he designed a font that serves as a sort of 1337 translator. Of course, leetspeak is not all that complicated of an idea for the uninitiated. It’s something akin to visual pig Latin.